Aeroplane



Jan. 7, 1939; J. B. GRiNOCH AL AEROPLANE Filed Nov. 192

2 Sheets-Sheet 1 3 mm?) mm ATTORNEY i- Jan. 7, 1930. J. aGRlNocH ET AL 0 AEROPLANE Fil d N '7. 1927 2 Sheets-Sheet 2 f i t is a in a 51 E taanoonn. enrnoon' arm Simon oansoon, on new roan, n; Y.

application filed vItiovember 7, 1927. Serial Kilo. names.

This invention relates to improvements in aeroplanes, and has for its object to provide means for extending'and contracting the I wing area for the purpose of obtaining 1 greater resistance to the forces of gravitation.

When at slow speed, or in the event of the engine stalling, or in air pockets where there is little sustaining power available in s the atmosphere;-the extension of the wings by means of the mechanism and construction shown herewith, will support the plane eificiently. and permit of a slowly graduated descent, or the hovering over a certain cality by proper manipulation at the will of the operator. I

Novel means are provided in this inven tion for the compact holding of the extension wings when not in use, and for their movement into operative positions as desired, and for securing them in these positions. I

A full description of the device and its construction willbe found set forth in the 1 ollowing specification and illustrated in the.

accompanying drawings Fig. 1 shows a top plan view of an aero-' plane with rear extension wings in closed position. i

Fi 2 shows a similar view embodying a .rnodi cation, 'in which forward extension wings are in co-relative arrangement with those. seen in Fig. l.

Fig. 3 shows a side view of the plane and wings.

Fig. 4 shows on an enlarged scale, a section on the line 4-4: of Fig. 1;

Fig. 5 shows an enlarged section on the line 5-5 of Fig. 1. I

Fig. 6 shows a iragmentary'fview on the line d-6 of Fig. .1.

Fig. Tshows -a fragmentary view oi the" illustrates the guide rails of theextension Fig. 9'shows a view of the winding mechanism as seen on the line 9-9' of Fig. 8.

Reierringnow to Figure 1 of the drawings, eXtensibie wings-10, 11, 12, 13, i l, and are shown telescoped in their closed position within the upper wing 16 of the plane. I

These extensible wings are sustained within the upper wing by slide members which will be described later, and by slide lugs as those seen at 18, 19, and 20 which are secured to the rear margins of the said wings and are .slidably supported on the rails as seen at-26,

21, 22 and 23. These. rails aresecured at their forward ends to the wingstriictnre as wili be described later, and are furtherf'sup ported by the bracket frames as seen nine and 25,'which are adju'stably secured to the body 10 oi. the plane. The extensible wings, fully opened, are shown in Fig. '2. The lower ends of the brackets 2d and are provided with rock teeth 24, 25, meshing with pinions. 82 on shafts 83 having gears 84 engaged by chains 85 extended over II other gears 86 and 87 and are driven by a K worm connection 89, said worm is provided with turning handles 88. The handles 88 may be individually operated to rotate gears 86' and 87 so as to adjust the tracks 2-1, 22, 23 and 26 to difierent angles to, the body 10' of the plane, so as to obtain the most desirable angles,preferably by testing the plane withthe tracks at various angles.

Referencewill now "be had to Fig. i of the drawings. it will here be seen that the raii 26 is secured to the frame of the 85 wing 16 and that the slide lugs 18, 19 and 20 are movably hungfon thesaid rail! lit The' upper oi the saidwings slides within the ledges 30 and 31,-and the lower wings are slidably supportedby the members as seen in Fig. 5 at33 and tit-these being secured to the wings each above that which is mg supported. I Referring again to Fig. i, it

when i tlieflwing 12".isdrawn backwardfthe" J siblje"'wings into positi ,brac et 7- The winding .mechan'isin' is illustrated in Figs. .8 and :9 and is as follows; the drum 50 therearlng 40 of the 1.1,; and-the" h. f i s-15's and: 13' and run back over-the uneyssa and 44 and :then. forward .areund heylleys 45 'ilits ofattac'hment'on the drum' 50.'-. The winding of'the said in.

and on to a. forward direction. acts-'todraw fthej return, or closing operation islperfo means of he retra wll ld o positely. onf-the drum, and the win" 'atta is supported within the frame 61 and has on one end, a ratchetwheel 621 "jA lever' 631is rotatablysup 'o'rted on the drum" shaft and has 'on ts s1 e,-'a rocker 64. Loosely. sup-' ported from 'thisrocker are the pawls 65,.and

l-{fififthe connectionbe eahleslasseenat 67.

i f'by' means offleiible v 'l fie' rookeris-controlled byithe jlift bar 6 8. 'Itfmaybe 'seenthat a iwilid motion ifiay be impartedto the drum bysw-in'ging the'lev'er w en the pawl '66 is engaged, and 'a reverse motion maybe ap- I plied when'the pawl (i5 is in operative s1- tion. The ratchet wheel is prevented om- ;ba'ck lash by the-spring dog 69 which is free whentlie lock'bar-70 is in-raised position.

. A'loos e' sprocket 71 is. provided with-*a lug lever-'63 which is within easy seat 72, and may bed l ,1; 12 which enga es the'flan'ge of the drum when ille'bamlever' 3 isithrowliover.v

. It will now be seen that-theextensible maybe opened and closed by means oft e g win any desired 'positionpg the sprin dog 69,

' A'mod' cation of einventi'o'n seeninFig.

' 2 comprises forward extensible 76 and in Fi" {8- at." 78 and 79'ffrom the drum-"80';-

'sig itable motor. 7 V 'flhngement whi'cliaen' 5 win 16; have abov the preferred form, construction-and arrangements r mmaybe-operated bythe hand crank 81, orinay bedriven the maindrum'50 bylthe'chain 82; the s rocketfl'being thrown in by the cam lever 18 a chanical evice ,;o

on the extensible wings: *Theeluwh I'ia opened-andclomd at'willtoextend thelwiztilgsi Another worm having 'fo 'posit'ely" th teeth, may bealso-rotates will to withdraw ile we susceptible of considerable 'modificatio'u,

"lege of resortin to all such changes a r y sco .,of theinventionfiblaimed. I 1 aving thus described our-invention, what win 38 engages'the'rear lug 0%- fi -W Eis-j nd- 42 are. secured'to'the wings p g in' extended .-positions, racket frames su blesfasthat seenz.

ent is ..asfshown @5210 the i d Y moving the bracket framesiend changing the reach from the Y which may be controlledbycablesasseen p a,

m extended positions, thejsaidplmonsbemg connected for simultaneous bpezfitionibybw "ingfikedon shafts provi r arscon- 1 o f'the several elements emp1oyed, .it be understood that the device is, nevertheless,

therein, and wetherefore reserve thepri'vi-j ied] within the spirit-an we claim as new and desireto ters Patent, is as follows: 1

tion, rails for supportin the telescopic wings tion, rails for supportinithe telescopic wings in 1 extended positions, 'racket framessu 1 porting the rails, irackiteethformed "out or lowerlends of the, bracket frames, pinionsj' meshing with the said-rack teeth and arranged for rotation manually controlled for .5 moving the bracket frames and changing the positions'of the said rails so as to chan the position of the said telescopic. wings w- 'en in extended positions, and'a worm and-worm pinion connected with the 'saidipinions for 1 operation in the, rotation thereof.

3. In an aeroplane telescopiewingsi arranged for moving into ,an'e'xtended-posbtion, rails for'supportin' the telescopicwings racket frames su in' extended positions, porting the .rail's, rack teeth formed on t e lower ends of the. bracket .,frames', pinions meshing with the said rack teeth and arrangedfor rotation manually controlled for I moving the bracket frames and changing no 1 positions of the said rails so as to"cha'nge the osition of the said telescopic wingsy when nected bya chain-.- In testimony whereof we v signatures. '1' Y 'neos sgam m b the motorlat wings into the I 1-. .In .anaeroplane with arranged for moving into an extended PQSl-r 

